(a) Prove that when a carrier is sinusoidally amplitude-modulated by a signal of lowerfrequency, the resultant wave may be resolved into the carrier and 2-sidebandfrequencies.(b) A carrierwave with amplitude of 50V and a frequency of 3MHzis AmplitudeModulated by a 10 KHz sinusoidal signal with amplitude of 8V.Sketch the Double Side Band Full Carrier envelope.Sketch the frequency spectrum, indicating the frequencies and mmsamplitudes of the various components.Determining the power of the AM wave, if the wave is transmitted via anantenna which has a resistance of 2002.(c) Draw a well labeled block diagram of an electronic communications system.(11)(ii)

According to the question, (a) Prove that when a carrier is sinusoidally amplitude-modulated by a…

(a) Prove that when a carrier is sinusoidally amplitude-modulated by a signal of lower frequency, the resultant wave may be resolved into the carrier and 2-sideband frequencies. (b) A carrierwave with amplitude of 50V and a frequency of 3MHz is Amplitude Modulated by a 10 KHz sinusoidal signal with amplitude of 8V. (1) Sketch the Double Side Band Full Carrier envelope. Sketch the frequency spectrum, indicating the frequencies and rms amplitudes of the various components. (i) Determining the power of the AM wave, if the wave is transmitted via an antenna which has a resistance of 2002. (c) Draw a well labeled block diagram of an electronic communications system.

(a) Prove that when a carrier is sinusoidally amplitude-modulated by a signal of lower frequency, the resultant wave may be resolved into the carrier and 2-sideband frequencies. (b) A carrierwave with amplitude of 50V and a frequency of 3MHz is Amplitude Modulated by a 10 KHz sinusoidal signal with amplitude of 8V. (1) Sketch the Double Side Band Full Carrier envelope. Sketch the frequency spectrum, indicating the frequencies and rms amplitudes of the various components. (i) Determining the power of the AM wave, if the wave is transmitted via an antenna which has a resistance of 2002. (c) Draw a well labeled block diagram of an electronic communications system.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Similar questions

i)Modulation process takes place in the modulator with two injection signals namely data orinformation and carrier. It is a vital step in generating a decent signal for electronic communication.Whenever the carrier is modulated by the information signal, new signals at different frequenciesare generated as part of the process. These new frequencies occur in the frequency spectrum withinthe range of the carrier frequency. Conclude these frequencies and mathematically explain itsgeneration with the help of diagrams. A) Upper sideband and lower broadbandB) Lower sidefloor and upperside floorC) Lower peak and upper peakD) Upper sideband and lower sidebandE) Lower bandwidth and upper gainF) All of the aboveG) None of the above
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A 10-MHz sinusoidal carrier wave of amplitude 10 mV is modulated by a 5 kHz sinusoidal audio signal wave of amplitude 6 mV. : 1- Draw the wave form of the resualtant modulated signal.
Why they do not affect the circuit in the high frequency and how the circuit pi model will be at low frequency?
The carrier frequency is 600 Hz, and the modulating signal is a single-tone sinusoidal signal. The x-axis is in time while the y- axis is the amplitude of the AM signal. If the peak voltage level of modulating and 1v and signal respectively, determine the modulating index. the carrier are 2V 2 1.5 1 0.5 -0.5 -1 -1.5 -2 0.005 0.01 0.015 0.02 0.025 0.03 0.035 0.04 0.045 0.05 Time (s)
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1. A modulating signal with an equation m cos2n(2k)t modulates a carrier signal with a peak amplitude of 9V and a frequency of 500 kHz. 5sin2n(3k)t + 6cos2n(6k)t + A. Calculate the RMS voltage of the modulating signal. B. Calculate the RMS voltage of the AM signal. C. Determine the bandwidth of the AM signal. D. Draw the frequency spectrum of the AM signal. Label completely.
In an Amplitude Modulator where the carrier and modulating signals are both sine waves, the frequency spectrum of the resulting AM signal is shown below. 12V 2V 2V kHz 803 808.6 a) Determine the equation of the modulating signal b) Calculate the bandwidth of the AM signal c) Calculate the effective current of the AM signal thru a 75-ohm load. d) Sketch the AM wave and label the maximum and minimum voltage of the signal.
2 (AM) A 10 V amplitude sinusoidal signal is used as a modulating signal to generate an AM signal with modulation index 0.8. What is the amplitude of the carrier? What is the power of the side bands? What is the efficiency of the modulated signal?
A 10-MHz sinusoidal carrier wave of amplitude 10 mV is modulated by a 5 kHz sinusoidal audio signal wave of amplitude 6 mV. :1- Draw the wave form of the resualtant modulated signal.2- Draw the frequency spectrum of the resultant modulated wave and their amplitudes
Discuss how the circuit produces a Frequency Modulated Signal
One input to a conventional AM modulator is a 600 kHz carrier with amplitude of 22 V. The second input is a 20 kHz modulating signal that is of sufficient amplitude to cause a change in the output wave of +9 V. Determine: a. Upper and lower side frequencies. b. Percent modulation. c. Peak amplitude of the modulated carrier and the upper and lower side frequency voltages. d. Maximum and minimum amplitudes of the envelope. e. Expression for the modulated wave. Then, f. Draw the output spectrum. g. Sketch the output envelope.